Sash-operating device



(No Model.)

W. J. B. HUNTER. -sAs'H OPERATING DEVICE.

No. 464,567. b Patented Dec. 8, 1891.

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. UNITED STATES PATENT OFFICE.

VALTER J. B. HUNTER, OF CHICAGO, ILLINOIS.

sAsH-oPERATiNG DEvicE.

SPECIFICATION forming part of Letters Patent No. 464,567, dated December8, 1891.

. Application filed February 3, 1891. Serial No. 379,954. (No model.) v

To all whom it may concern.-

Be it known that I, WALTER J. B. HUNTER, a citizen of the United States,residing at Ohicago, county of Cook, State of Illinois, have invented anew and useful Improvement in Devices for Raising and Lowering Sashes,of which the following is a specification.

My invention consists of details of construction and operationhereinafter more fully described, and particularly pointed out in theclaim.

Figure 1 is a side elevation of a window with part 'o f the casingbroken away, showing. l iny invention.

Fig. 2 is a sectional view on lines 2 2, Fig. 1. Fig. 3 is a sectionalview on lines 3 3, Fig. 2. Figlis. a sectional view on lines 4 4,Fig. 1. Fig. 5 is an edge view of a portion of the sash, showing theracks.

A represents the window-frame; B, the lower sash; C, the upper sash; D,the wormscrews; E, the racks; F, the rods G, the chain-wheels; H, thechains, and I the door in the window-apron. are setinto-thepulley-stilewith their threads projecting beyond its face, one a little above theother, the upper one engaging the rack on the upper sash and the lowerone the rack on the lower sash. These worm-screws are attached to oneend of' the rods F and the chain-wheels G to the other end. Both sidesof the window are provided with racks, wormscrews, &c., in the samemanner. The chainwheels G are connected by the chains H in order torevolve the worm-screws on each side simultaneously'.

The operation of my device is as follows: The door I is raised and thechains H drawn from one side to the other by the hand revolving theworm-screws on each side and raising The worm-screws D or lowering thesash, as desired. Both sashes are operated in the same way. Thearrangement of the chains one above the other, as specified, rendersboth chains readily accessible.

Some of the advantages of my invention are that the window cannot beopened from the outside, the mechanism is compact and requires littlespace in the pulley-stile, makingit practical to construct the frames ofiron instead ot' wood, and the sash can be more easily taken out of theframe.

I do not wish to limit myself to the exact construction shown anddescribed, as the saine `may be slightly varied without departing fromthe spirit of my invention.

I am aware of English patents No. 1,252 of 1881 and No. 5,770 of 1829,and make no claim to the invention therein disclosed.

What I claim, and desire to secure by Letters Patent. is- Theherein-described device for raising and lowering window-sashes,consisting of a window-casing provided with a recess underneath thesill, a door for closing said recess, windowsashes mounted to slide inthe casing and provided with racks E, rods F, arranged in each side'of.the casing and provided with worms to engage said racks and havingsprocketwheels on their lower ends within the recess in the casing,audsprocket-chains connecting said rods in pairs and arranged within thesaid recess one above the other, substantially as set forth.

I/VALTER J. B. HUNTER. y

Vitnesses:

L. V. LE MoYNE, F. J. LE MOYNE.

